Angular distributions of the alpha particle transfer reaction ${}_{}{}^{12}{}_{}{}^{}\mathrm{C}$${(}^{11}$B${,}^7$Li${)}^{16}$O were measured for 28, 35, 40, 50, 56, 60, and 80 MeV beam energies. Exact finite range distorted-wave Born approximation (DWBA) analysis was performed for eight states of ${}_{}{}^{16}{}_{}{}^{}\mathrm{O}$: ground state, 6.13 MeV ($3^{\mathrm{-}}$), 6.92 MeV ($2^{+}$), 10.36 MeV ($4^{+}$), 11.10 MeV ($4^{+}$), 14.82 MeV ($6^{+}$), 16.28 MeV ($6^{+}$), and 20.86 MeV ($7^{\mathrm{-}}$). Values of spectroscopic factors were extracted. For low lying states they agree well with theoretical shell model predictions. No evidence for tetrahedral deformation of the ${}_{}{}^{16}{}_{}{}^{}\mathrm{O}$ ground state was found.

• Received 15 March 1994

DOI:https://doi.org/10.1103/PhysRevC.50.300